Question

9- Simplifique as expressões:
a)(m – 1)2 – (m – 1)(m + 1) =​

Answer 1

a)(m – 1)2 – (m – 1)(m + 1) =

2m - 2 - (m - 1)(m + 1)

2m - 2 - m² + 1

2m + (-2 + 1) - m²

2m - 1 - m²